Record details

Title
    Hydrothermal uranium-base metal mineralization of the Jánská vein, Březové Hory, Příbram, Czech Republic: lead isotopes and chemical dating of uraninite
Author
    Goliáš, Viktor
    Ježek, Josef
    Plášil, Jakub
    Sejkora, Jiří
    Strnad, Ladislav
    Škácha, Pavel
    Škoda, Radek
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Journal of Geosciences
Vol./nr.
    Roč. 54, č. 1
Pages
    13
Year
    2009
Thesaurus term
    Jánská vein
    Jánská vein
    lead isotopes
    Příbram Březové Hory
    uranium
Keyword
    Březové
    Chemical
    Czech
    Dating
    Hory
    Hydrothermal
    Isotopes
    Jánská
    Lead
    Metal
    Mineralization
    Příbram
    Republic
    Uraninite
    Uranium-base
    Vein
Abstract (in english)
   On the Jánská vein were mined base metal raws and shortly uranium. Uranium mineralization is younger than a major part of polymetallic mineralization according to macroscopic and microscopic study.

   On the Jánská vein were mined base metal raws and shortly uranium. Uranium mineralization is younger than a major part of polymetallic mineralization according to macroscopic and microscopic study...

   The Jánská vein is one of the important veins of Březové Hory mining district (central Bohemia, Czech Republic). Base metals were mined here since 14th century and uranium ore during late 1950s. Uranium mineralization is younger than most of the base metal mineralization according to macroscopic and microscopic study. Most specimens of uraninite, obtained from archive, contain more or less abundant galena inclusions. Galena of this type is non-radiogenic as indicated by its Pb isotopic composition (ICP-MS). Its origin can be explained by remobilisation of the older base-metal mineralization during the younger, uranium-bearing mineralization event. The amount of radiogenic Pb in uraninite fluctuates from 48 up to 89.8 %. The age of theoretical end member of uraninite, calculated statistically from all measured data (for intersection 208Pb/206Pb = 0), is 269.8 err 20.3 Ma. The only uraninite grain without galena inclusions yielded an age of 263.2 err 8.9 Ma by chemical dating using elect
   ron microprobe.
Contributor
    MU Brno, Přírodovědecká fakulta
    Národní muzeum Praha
    UK Praha, Přírodovědecká fakulta
Contributor code
    MU, PřF
    NM
    UK, PřF
Source format
    R
Import date
    8. 8. 2012